01778nas a2200205   4500008004100000022001400041245009400055210006900149260007100218300001400289490000700303520101700310100001901327700001701346700001701363700002601380700001801406700002001424856012801444       2016                        eng d  a0897-475600aInterplaying intrinsic and extrinsic proton conductivities in covalent organic frameworks0 aInterplaying intrinsic and extrinsic proton conductivities in co  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR  a1489-14940 v283 a<p>A sulfonic-acid-based covalent organic framework (TpPa-SO3H) has been synthesized that exhibits intrinsic proton conductivity under anhydrous conditions. The sulfonic acid groups are aligned on the two-dimensional (2D) layers at periodic intervals and promote the proton hopping inside the hexagonal one-dimensional channel. The intrinsic proton conductivity of TpPa-SO3H was measured as 1.7 X 10(-5) S cm(-1) at 120 degrees C under anhydrous conditions. To enhance the proton conductivity, we have synthesized a hybrid COF TpPa(SO3H-Py) by a ligand-based solid-solution approach that contains sulfonic acid as the acidic site, as well as pyridine as the basic site, in order to immobilize acidic proton carrier molecules. Impregnation of phytic acid molecules inside the framework increases the anhydrous proton conductivity up to 5 x 10(-4) S cm(-1) at 120 degrees C. Such an approach highlights the advantage and first-time use of hybrid COF for interplaying intrinsic to extrinsic proton conductivity.</p>1 aChandra, Suman1 aKundu, Tanay1 aDey, Kaushik1 aAddicoat, Matthew, A.1 aHeine, Thomas1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/interplaying-intrinsic-and-extrinsic-proton-conductivities-covalent-organic-frameworks-0